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Fragilidade ambiental e potencial energético em propriedades de agricultura familiar no Município de Cascavel- PR

2026-07-08T23:32:36Z

Title: Fragilidade ambiental e potencial energético em propriedades de agricultura familiar no Município de Cascavel- PR Autor: Bandeira, Gabriela Primeiro orientador: Prior, Maritane Abstract: Family farming plays a strategic role in food security, environmental sustainability, and socioeconomic development, especially in agro-productive regions such as Cascavel. However, this sector faces significant challenges related to land-use intensification, reduction of vegetation cover, and the need to incorporate sustainable technologies that ensure the productive viability of rural properties. In this context, this study aimed to identify and classify environmental fragility levels and to assess the potential for renewable energy implementation in family farming properties in Cascavel–PR, Brazil, through an integrated geospatial approach. The methodology was based on the environmental fragility framework proposed by Ross (1994), distinguishing potential fragility, associated with natural terrain conditions, and emergent fragility, resulting from the interaction between physical factors and anthropogenic land use. Slope was classified according to technical parameters from EMBRAPA and IBGE; land use and land cover were analyzed using MapBiomas Collection 10; and Permanent Preservation Areas (APPs) were evaluated in accordance with Brazilian Forest Code (Law No. 12,651/2012). A total of 67 rural properties distributed across eight districts of the municipality were analyzed, with six selected for multitemporal analysis of land use and land cover between 2015 and 2023. The results revealed a predominance of moderate (50.7%) and high (40.3%) environmental fragility levels, mainly associated with undulating terrain and intensified agricultural use. The estimated energy potential indicated an average productivity of 1,515 kWh/kWp·year for photovoltaic generation, demonstrating not only the technical feasibility of solar energy in rural contexts, but also its potential as a complementary strategy for income generation and strengthening family farming systems. Unlike conventional approaches that assess energy potential in isolation, the results show that its feasibility is directly related to local environmental conditions, such as slope, vegetation cover, and the presence of protected areas. It is concluded that the integration of environmental planning and energy use allows not only the mitigation of impacts in more sensitive areas, but also the optimization of land use. Furthermore, this integration may contribute to the reorientation of territorial planning in family farming and to the development of public policies aimed at sustainable land use, productive diversification, and the promotion of environmentally suitable energy systems, in alignment with the Sustainable Development Goals. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Tese

Deposição de gotas e eficácia do glufosinato de amônio aplicado com Aeronave Remotamente Pilotada (ARP) no controle de Conyza spp.: influência da vazão e do tamanho de gota

2026-07-08T23:31:55Z

Title: Deposição de gotas e eficácia do glufosinato de amônio aplicado com Aeronave Remotamente Pilotada (ARP) no controle de Conyza spp.: influência da vazão e do tamanho de gota Autor: Peres, Dandara Maria Primeiro orientador: Santos, Reginaldo Ferreira Abstract: Spraying with Remotely Piloted Aircraft (RPA) operates with drastically reduced spray volumes (7 to 10 L ha⁻¹) compared to conventional ground methods, imposing the challenge of ensuring sufficient deposition for the efficacy of contact herbicides, such as glufosinate ammonium, used in the management of hairy fleabane (Conyza spp.) in soybean pre-sowing. This study aimed to evaluate combinations of spray volume and droplet size that maximize target deposition, provide effective weed control, and minimize drift risks. The experiment was conducted in a completely randomized design with six replications, using a DJI Agras T40 drone in a commercial area in the municipality of Lindoeste, PR, Brazil. Eight treatments were tested, resulting from the combination of two spray volumes (7 and 10 L ha⁻¹) and four droplet sizes (100, 200, 300, and 400 μm). Deposition was evaluated using water-sensitive papers, analyzing volume median diameter (VMD), covered area (%), droplet density (droplets cm⁻²), and potential drift risk. Hairy fleabane control efficacy was visually assessed at 7 and 14 days after application (DAA), according to the Brazilian Society of Weed Science (SBCPD) methodology. Data were subjected to analysis of variance and regression analysis. Treatments T2 (7 L ha⁻¹ + 200 μm) and T8 (10 L ha⁻¹ + 400 μm) showed the best results, with covered areas of 2.69% and 2.84%, and droplet densities of 79.18 and 57.42 droplets cm⁻², respectively, not differing statistically from each other. Treatment T4 (7 L ha⁻¹ + 400 μm) showed the poorest performance (0.34% coverage). Regression analysis revealed a quadratic relationship between droplet size and covered area, with maximum estimated points at 215 μm (R² = 0.99) for 7 L ha⁻¹ and at 380 μm (R² = 0.58) for 10 L ha⁻¹. Regarding biological efficacy, treatment T5 (10 L ha⁻¹ + 100 μm) provided the highest absolute control at 14 DAA (≈95%), while T2 and T8 showed satisfactory control (≈82% and 64%, respectively), combining good deposition with adequate levels of hairy fleabane suppression. The VMD range between 200 and 300 μm provided the best balance between coverage (>2.5%), density (>50 droplets cm⁻²), and drift risk (<15%). It is concluded that configurations T2 (7 L ha⁻¹ + 200 μm) and T8 (10 L ha⁻¹ + 400 μm) are the most suitable for glufosinate ammonium application via RPA, recommending droplets in the 200–300 μm range to reconcile agronomic efficacy and drift mitigation. "This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001." Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação

Cultura científica e qualidade de vida no programa “Felicidade do idoso “ensinando ciência em espaços não formais

2026-05-26T13:56:46Z

Title: Cultura científica e qualidade de vida no programa “Felicidade do idoso “ensinando ciência em espaços não formais Autor: Borchart, Saulo Augusto Primeiro orientador: Malacarne , Vilmar Abstract: This dissertation investigates the FeliCidade do Idoso Program, developed in Cascavel (Paraná, Brazil), as a public policy aimed at promoting active aging and citizenship, with an emphasis on the presence of scientific culture in non-formal educational spaces. The objective was to understand how the incorporation of science, in its various cultural manifestations, contributes to improving the quality of life of participating older adults and to the construction of more autonomous and conscious everyday practices. The methodology adopted followed a mixed-methods (qualitative– quantitative) approach. The WHOQOL-Bref questionnaire was administered to older adults attending the program, and semi-structured interviews were conducted with 15 professionals involved, including lecturers, workshop facilitators, and coordinators. Data analysis made it possible to observe how scientific knowledge is integrated into the educational, social, and health-related practices developed within the program, and how this integration impacts older adults’ perceptions of their own quality of life. The results indicate that the program promotes a concrete connection between science and the everyday lives of older adults through activities such as health lectures, nutrition workshops, guided physical exercise, cognitive games, and cultural experiences. These actions are carried out by professionals who act as mediators of scientific knowledge, translating concepts and practices in an accessible, contextualized manner adapted to the needs of this population. This dynamic constitutes a practice of disseminating scientific culture, as it helps older adults understand science as part of their lives and daily decision-making. The analysis of the interviews allowed the perceptions to be grouped into three categories: (1) bringing science education closer to everyday life; (2) scientific culture as a tool for autonomy; and (3) science as an instrument of social inclusion. It was observed that participating older adults demonstrate greater engagement in activities when they understand the practical usefulness of the knowledge conveyed, which fosters autonomy and physical, mental, and social well-being.It is concluded that the FeliCidade do Idoso Program represents an experience of articulation between science, culture, and public policies by transforming scientific knowledge into a tool for inclusion and the appreciation of older adults. The presence of scientific culture in a non-formal space proves to be relevant not only for the dissemination of knowledge, but also as a mechanism for strengthening citizenship, intergenerational interaction, and dignity in aging. It is therefore an effective, sustainable, and replicable model for integrating science into everyday life, with concrete impacts on the quality of life of the older population. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação

A avaliação em matemática: da Reforma Francisco Campos à Lei de Diretrizes e Bases da Educação Nacional de 1996

2026-05-21T13:52:32Z

Title: A avaliação em matemática: da Reforma Francisco Campos à Lei de Diretrizes e Bases da Educação Nacional de 1996 Autor: Severo, Leonardo Primeiro orientador: Ribeiro, Dulcyene Maria Abstract: The teaching and learning process is rooted in the history of society itself, and the Brazilian context is no different. To understand this process, it it possible to examine the Brazilian education system and its historical construction. Mathematics assessment is linked to the pedagogical frameworks that guide educational systems, adopting different perspectives over time and serving the interests of Brazilian society across various historical periods. But how, has mathematics assessment been expressed throughout the history of the Brazilian school system? The general objective of this study was to analyze the approach given to assessment in mathematics teaching within the Brazilian educational context between the Francisco Campos Reform (1931) and the Law of Guidelines and Bases of National Education (LDB) of 1996, including the evaluative conceptions and practices expressed in the educational policies and curricular documents of the period. This study characterized as qualitative research, characterized as historical-bibliographic research. The theoretical framework was based on books, theses, dissertations and scientific articles published in journals or conference proceedings, such as studies by Barlow (2006), Dallabrida (2009, 2014), Fiorentini (1995), Hadji (1994), Luckesi (1999, 2002, 2021) and Valente (2008, 2012). The study discussed the Francisco Campos (1931) and Capanema (1942) Reforms, the Law of Guidelines and Bases of National Education (1961) and the Laws of Guidelines and Bases of Education (1971, 1996). For data production, a documentary analysis was performed. This analysis was based on the following categories: representations of mathematics assessment, evaluative practices and knowledge established over time in mathematics teaching. The results pointed to the materialization of a predominantly classificatory assessment, even if showing interest in formative aspects. Assessment is not merely a technical procedure; its materialization is a cultural and historical object. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação